Soft Reject -- Your jQuery code can benefit from some performance tweaks.

Our theme got rejected for the 7th time. This was the second time we got this reason (Your jQuery code can benefit from some performance tweaks.) We have gone thru the entire list of these suggested tweaks already. Now we dont know what will it take for us to get approved. Any help in this matter ??
Also why does the review team point out one or two things per each submission ? Wouldnt it be easier and time saving if they could just go thru the entire theme and point out all the errors/weaknesses in one go.
Lastly does anyone know if the same reviewer reviews your theme every time or its a different person each time.